[Versatile Use] Ideal for use in public restrooms, this door lock is a practical and essential hardware accessory that adds convenience and privacy to any bathroom environment. [Easy to Use] Designed for restrooms, toilets, and public bathrooms, this lock clearly indicates whether the room is empty or occupied with red and green colors, providing a universal way to signal occupancy. [Universal Indicator] The easily recognizable red (occupied) and green (empty) colors make this lock suitable for a variety of public facilities such as airports, stations, hospitals, shopping malls, and office buildings. [Materials] The door lock is made of zinc alloy and stainless steel, ensuring rust resistance and durability. Its smooth surface adds a touch of sophistication. [Simple Installation] With easy installation instructions, this indicator bolt is suitable for partition doors and shower screens, making it convenient for various environments.